/*
 * Copyright 2022 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.viewbasedfeedlayoutsample.ui

import android.graphics.Rect
import android.view.View
import androidx.recyclerview.widget.RecyclerView

class SweetsFeedItemDecorationInGrid(
    private val horizontalSep: Int,
    private val verticalSep: Int,
    private val columnCount: Int
) : RecyclerView.ItemDecoration() {

    override fun getItemOffsets(
        outRect: Rect,
        view: View,
        parent: RecyclerView,
        state: RecyclerView.State
    ) {
        val position = parent.getChildAdapterPosition(view)
        with(outRect) {
            top = if (position == 0) {
                0
            } else {
                verticalSep
            }
            left = if (position % columnCount == 0) {
                0
            } else {
                horizontalSep
            }
            right = if (position % columnCount == columnCount - 1) {
                0
            } else {
                horizontalSep
            }
            bottom = verticalSep
        }
    }
}
